As you continue to cross the offspring resulting from the previous question with albinos, what will occur in the growing population?

The  offspring is/are going to be albino as well, because being albino is caused by being homozygous (true-breeding) recessive on the allele for albinism.  

Let us recall that ALLELES are alternative versions of genes; Gregor Mendel's term for alleles is 'traits'. A monohybrid cross is a cross that follows the inheritance of a single gene (in this case, we are investigating the inheritance of the allele for albinism).  

Below is an example of a cross between two albino parents:

Let 'a' be the allele for albinism; and being an albino means being homozygous recessive for 'a', which gives us the genotype 'aa' for both parents

           Female:                          Male:

              aa                 x                aa

the correct answer is b